Chapter 144 Shock (4)

Yu Yueyun looked at the hourglass and counted the time. Lift the steel column from time to time and wait for a while, and then continue to quench—this is to prevent cracks from appearing due to too much quenching once. At the same time, people were tested for the content of Reiki in the water. What is used for quenching is spiritual spring, not ordinary water.

After repeated tests, everyone found that direct quenching will cause the black iron to form a kind of "spiritual energy insulator"; but if it is quenched with a spiritual spring, this situation can be eliminated.

However, quenching is also a technical activity. The higher the quenching temperature, the harder the steel; but the higher the temperature, the easier it is to cause breakage.

And how to master the 'speed' requires experience and serious research spirit.

In this regard, Yu Yueyun showed a talent that shocked even Zhang Hao. Moreover, he also learned and worked hard from folk blacksmiths and general craftsmen.

In just a few days, he mastered the basic requirements. Maybe not perfect, but at least it's good enough for the steel columns right now.

For these steel pillars, Zhang Hao does not need to reach the strength of "high-grade magic weapons", as long as they can reach the strength of ordinary magic weapons. Technology should be accumulated slowly.

Half a day later, when the steel pillar had cooled down, Yu Yueyun placed the steel pillar inside another barrier, adjusted the flame temperature to 500 degrees, and heated it gently. And asked the craftsman next to him to take out the steel column after two hours, and let it cool naturally after placing it.

In the next two days, Yu Yueyun kept his feet on the ground and personally supervised the production of each steel column. Just in case, Yu Yueyun produced a total of 14 steel columns.

In the end, the production of Zhangjiaxuan iron could not keep up, and even directly mobilized from the Luancishan factory. Fortunately, the road from Luanci Mountain to Zhangjia has been rammed, otherwise it would be another troublesome matter.

Each of the 14 steel columns is about 8.6 meters high—it was originally expected to be 8 meters high, but due to the reserved lifting barb above, the height increased by 0.6 meters.

The lower part of the steel column has a diameter of one meter and a height of eight meters; the upper barb has a diameter of more than 30 centimeters, forming a barb about 0.6 meters in height.

The weight of each steel column is around 51 tons, and the weight does not exceed 0.2 tons.

In the early morning of the sixth day, Zhou Jue took everyone from the Artifact Refining Guild with him, and a few powerful masters in Nine Sun Sect costumes.

Behind these 'middle-aged', there is a pair of men and women who look rather aloof, they seem to be husband and wife. The woman was talking to Zhou Xueyao, and the two women kept chuckling.

Next to her, Mu Yingying looked at Zhou Xueyao vigilantly, her eyes flicked between Zhang Hao and Zhou Xueyao from time to time.

Zhou Jue came over, "Brother Shi, let me introduce you. This is the master of the Nine Yang Sect Refining Hall, Master Uncle Zhang Xinhan, in the early Yuanying stage. No one can match his crafting skills."

Zhang Xinhan nodded to Zhang Hao with a cold face, and said coolly: "Don't listen to his nonsense. In terms of refining, I can only say that no one of my peers can match it. Compared with some elders, elders, etc., there are still shortcomings."

Zhang Hao: ... Are you self-effacing or boasting?

Zhou Jue's face was also a little embarrassed, and he lost the desire to introduce in detail, so he casually pointed to the one behind Zhang Xinhan and said simply: "These are all from the Nine Yang Sect's Artifact Refining Hall."

Then he pointed to the pair at the back: "These two are from Xinglintang, Uncle Lu Yang, and Lu Yang's wife Xiao Xiao are both in the Nascent Soul Stage.

Uncle Lu Yang is the best craftsman in Xinglintang, especially in refining alchemy furnace. Uncle Xiao Xiao is unique in alchemy. Uncle Zhang made many of the pills that were refined for you earlier. "

Just as they were talking, someone from the Xuantie Factory also came. Li Yousheng and Li Yuanyuan, who led the team, were dressed fresh and beautifully. But Li Yuanyuan saw Zhou Xueyao immediately.

I don't know if beautiful girls are born with the attribute of attracting each other.

Today's Zhou Xueyao didn't wear a veil, her face was facing the sky, but she was extraordinary, and I don't know how many people's eyes were attracted.

Just when Zhou Jue introduced Lu Yang and Xiao Xiao, Zhang Hao and Zhou Xueyao started chatting and laughing. Seeing that the two looked very familiar, the shyness on Li Yuanyuan's face faded instantly.

An inexplicable sense of crisis and a bit of sourness rose in her heart. This woman who appeared suddenly looked...too outstanding.

After talking with Zhou Xueyao, Zhang Hao said to everyone: "Thank you for coming to Zhang's house during your busy schedule. I won't say any more polite words. The Zhang family has already prepared the embryo of the fierce fire formation. Please come with me."

The 14 8.6-meter-high steel columns standing in Zhang's compound are too obvious, and everyone has already seen them outside. But at that time, I didn't know what it was: the surface of the steel column that was quenched and tempered in the ground fire environment was pitch black, and the Zhang family didn't polish it, so it really didn't have the brilliance of 'black iron' at all.

Zhou Jue stood under the steel pillar and looked up at the steel pillar. The shock in his heart was indescribable.

One meter in diameter, it takes two people to hug each other. And the height of 8.6 meters is almost the height of five people.

These steel pillars weighing more than 50 tons were only placed on the ground, and after just one night, the ground was pressed down to a depth of one foot.

Gently stroking and silently feeling these heavy 'iron pillars', Zhou Jue's heart became more and more shocked. These iron pillars are all made of black iron with a purity of 96%, and the structure is dense, completely cast in one go.

Carefully tap it with your nails, but it doesn't move at all, only rubbing off a little black skin, exposing the blue-glowing steel inside.

Zhou Jue was even more surprised. As a master in the mid-Yuanying period, his nails are hard enough to cut gold and jade, and ordinary, unforged black iron is enough to leave deep cut marks.

Unconvinced, Zhou Jue turned his true energy, with a cold light on his nails, and grabbed the steel pillar again.

But the next moment, Zhou Jue's face was distorted. Nail... bent!

it hurts!

Covering her paws, Zhou Jue turned her head carefully to see if anyone saw her ugly face; no one would care if everyone was staring at the steel pillar in a daze.

Xin Han, the dignified craftsman of the Nine Yang Sect, was hammering with his fist, but the 50-ton steel column did not move at all, not even making a sound.

After hammering for a long time, only part of the black outer skin was hammered off, exposing the blue-glowing steel inside.

Zhang Xinhan backed away a few steps, looked at the height of the steel column, and turned to Zhang Hao, "Do you really want to engrave seals on this?"

"Yes. Excuse me, senior."

Zhang Xinhan nodded coolly, took out a pointed chisel with flowing Baoguang, and chiseled at the bottom of the steel column.

There was a clang, sparks flew, and the point of the chisel... snapped!

Broken!

Zhang Xinhan looked at the chisel in his hand, and then at the steel pillar with only a little mark left, with an embarrassing expression on his face.

Zhang Hao waited for a long time, but he couldn't see Zhang Xinhan speaking or moving, so he had to speak cautiously: "Senior?"

"Ah..." Zhang Xinhan woke up startled, stood up, and could no longer maintain his cool expression, "You guys... why is the black iron so hard, my high-grade magic-quality chisel has all collapsed!"

"The quality of a high-grade magic weapon?" Zhang Hao was a little puzzled, "Our pillar has only reached the quality of a middle-grade magic weapon!"

Yes, Zhang Hao is sure that it has only reached the quality of a middle-grade magic weapon. Originally, Zhang Hao asked that as long as it reached the low-level magic weapon quality, it would be fine. But Yu Yueyun insisted on refining the quality of a middle-grade magic weapon.

Zhang Xinhan was stunned for a moment, and suddenly asked: "How do you define quality?"